I have a one story house with hot water heat. The house also has forced air AC ducts running from the attached garage, in the attic, down into the living room, bedrooms, and kitchen. At certain times throughout the winter, water will drip from those vents. I believe it is from condensation forming in the ducts, and dripping down into the house.

Would just putting insulation around the ducts work? The ducts are running through my attic, which is not insulated.
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MJ.Mar 3 '11 at 21:54

1

@MJ01 It'll work. Ideally you wrap the ducts, either in foam board (big supply trunks), foil wrap, or you can use normal batts. You can bury them in loose fill too, but it's not quite as effective.
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Steve JacksonMar 3 '11 at 22:40